Electronic Principles
For a pure capacitor:

None of these
ac current leads the voltage by 90 degree
ac current and voltage are exactly in phase
ac current lags the voltage by 90 degree
ac current is converted to dc voltage

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Electronic Principles
The total capacitive reactance of a parallel capacitor circuit is:

less than the capacitance value of the smallest capacitor
equal to the sum of the individual capacitance values
equal to the sum of the individual capacitive-reactance values
None of these
equal to the source voltage divided by total current

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